Paper carriage



O. J. SUNDSTRAND PAPER CARRIAGE Filed Dec. \17. 1928 050er J Sundm 30 Fig. 8 is Patented Oct. 4, 1932 UNITED STATES PATENT clericsl OSCAR J'. SUNDSTRAND, OF ROOXFOBD, ILLINOIS, ASSIGNOR TO ASUNDSTIR'AND CORPORA- TION, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE PAPER CARRIAGE Application ma December 1v, 192s. serial menaces.

This invention relates to paper carriages such as are used in typewriters and bookkeeping machines. It relates more particularly to a paper carriage provided with several alined platen-sections, and has special reference to means whereby an intermediate section may be rotated independently of the other sections, and means whereby anintermediate section may be rotated-synchronously with one of the other sections by means suchas the usual finger .wheeland by means of an injectingand ejectiri'gfmechanism, and

by means operable in theiregular operationk of the machine. 15 In the accom anying drawin Figure 1 is a ragmental longitudinal central section through the lefthand end platensection. v j

Fig. 2 is a longitudinal sectional view of t0 the right-hand end platen-section.

Fig. 3 is a fragmental front view of the paper carriage.

Fig. 4 is a perspective view of a locking shoe comprised in the construction.

Fig. 5 is aperspective view of a member in the nature of an arm.

,F'g. 6 isa fragmental sectional view of the left-hand end platen-section. i

Fig. 7 is a section on line 7 -7 of Fig; 3.

mechanism. Fig. 9 is a detail view of the arm 18 and the pawl 39-'40 carried thereby. The pawl 17 is omitted for the sake of clearness.

The present embodiment of the invention comprises a platen formed in three alined sections A, B and C. We may assume that the section A is to be used for the tally web, the section B for the ledger sheet, and the section C for the statement, although this particular arrangement of the vwork-pieces 1s not important. l

The section A has fixed thereto a tubular shaft 1 which is supported in abearing bush-A ing 2 that is fixed to the end plate 3 of the paper carria e. The means for manually turning the p aten-section A comprises a inf. ger wheel 4 which is rigidly secured to the tubular shaft 1. 5 The platen-section B is fixed to a shaft 5,

a fragmental view of a ratchet for example,

the right-hand portion` ofywhich is rotatably supported within'the tubular shaft 1. The l means for manually turning the platen-section B comprises a finger wheel 6 that is rigidly secured to Athe right-handend of the shaft. f

.The platen-section C is rotatably supported in the following manner: The hand end of the platen-section'C hasa bearmg 7 (Fig. 1) which is rotatably'supported upon the left-hand portionv ofthe shaft 5.

The left-hand `en'dfof. ythe .platen-section C hasfixeVv thereto ay bearing sleeve8 whichis mountedupon a tubular shaft 9, the sleeve being fixed to the vshaft 9 by means of set screws 10. The shaft 9 is rotatably supnghtportedin a bushing 11 that is fixed to the lefthand end p late12 of the The left-hand in diameter and is rotatably supported'within the inner end of the sleeve 8. The means means of set screwsl.

paper carriage. end of the shaft 5 is reduced Themeans for imparting line-space movements to the platen-section `A in the opera- Y I l tion of the machine comprises a ratchet wheel 16 (Fig. 1) which is fixed to the tubular shaft 1. A pawl 17 is pivoted to the lower end of an arm 18, the upper end of said arm being pivoted Vto l tension spring 20 stretched between the pawl 17 and the arm 18 normally holdsthe pawl in engagement withthe ratchet wheel. 21 is a statlonary cam fixed' to the end plate 3 and arranged to be engaged by a stud 22 on the pawl 17 as the pawl completes its forward stroke. The arm 18 Vis arranged to be swung forward during the returnjstroke of the main operating handle (not shown) by the means this character,or in any preferred' manner. The only portion of said means herein shown is a rod 23, the right-hand end of which is connectedV to the lower end of the arm 18.

Detentmeans of the usual character, as, a spring arm carrying'a roller engaging the teeth of the ratchet wheel, is

preferably provided to hold the platen-secthe paper carriage at 19. A f

tion A against casual rotation and to complete the line-space movement initiated b the pawl 17. For the sake of clearness, suc

detent means has been omitted from the drawing.

The means for imparting line-space movements to the platen-section C in the operation ofthe machine may 'b'efandpreferably is substantially identical with that described in connection with the platen-section A. 24 is a ratchetk wheel yieldingly connected tothe tubular shaft 9 and arranged to be rengaged by a pawl 25 pivoted on the lower end of an arm 26 which is similar to thek arm The lower end of the arm 26 is connected to the transverse rod 23 so that the arms 18 and 26 swing inunison.

` Means is lpreferably'provided for imparting-rapid rotative movements to the platensections B and C' for quickly bringing the ledger sheet and the statement to approximate printing position and for quickly ejecting said'sheets from the machine. Said injecting and ejecting means may be of' any preferred construction, the only portion of suchv means hereiny shown being a pinion 27 which is rigidly connected to the right-hand portion of thes'haft 5 for turning the latensection B, anda similar pinion 28 w ich is rigidly secured 4to the tubular shaft 9 for rapidly Vrotating the platen-section The platen-section B is arranged to bereleasably connected tothe platen-.section C so as to rotate therewith. i The means herein shown for .thus uniting the two platen-sec-V` tions B and C comprises a screw 29 (Fig. 6)', the .stem 30 of which is rotatably supported in' thetubular shaft 9. The stem 30 has a knurled head 31 by means of which it ,may be turned'. The4 screw 29 is guided within an Y kaxial opening 32 in the shaft 5 "and is ar'- ran'ged to engage screw-threads 33formed in said shat." l-At the outer end of the screw 29 the stem30` is tapered as at 34. When the screw 29 is turnedinto engagement with the threads 33, the tapered portion 34 engages a semi-circular shoe 35 which is mounted in a recess 36 formed in that portion of the shaft 5 which is -rotatably supported in the inner V endof the sleeve 8.-"When the screw 29 is lturned into engagement withthe threads 33, the tapered portion 34force`s the shoe35 radially'outward into 'clamping engagement with thesleeve 8, whereby the shaft 5 is fixed to the sleeve 8,`and the sections Band C united.

An expansive spring 37 surrounding the outer portion of the stem 30 bears at one end against thehead 31 and at vits otherv endl against the outer endof the tubular shaft When the screw 29 is turned out of engage'- ment with the threads 33 the spring 37 moves the screw toward the left andholds it out of" engagement with thethreads 33.V The action 18 and is mounted to swing upon the axis 19.

stop 37 on the stem 30 with the inner end of theshaft 9.

Means is provided for imparting line-s ace movements to the middle platen-section in 'the regular operation of the machine. Said means comprises a toothed wheel 38 which is fixed to the right-handv portion of the shaft 5 and is arranged to be engaged Vby a reciprocatory toothed member." In this instance, said toothed lmember is in the form of a hardened bar or block 39 which is fixed to a member 40 y(Fig.V 5,) in the nature of an arm pivoted to the arm 18. The member 40 is pivoted upon a stud 41 which is fixed to the arm 18. A tension spring 42 is stretched between the member 40 and a lug 42il on the arm 18 and tends to hold the toothed block 39 in- Contact with the toothed wheel 38. VNear the end of its forward stroke, the toothed bar 39 is moved the end' plate3.

By reason ofthe fact that the means yfor Vturning the middle platen-section B in `the regular operation of the machine must be located at the right-hand side of the finger Wheel ,4 'and the injectorand ejector pinion 27 ,the toothed wheel 38'is necessarily` located at a considerable distance from the end plate 3 of the paper carriage. It is therefore impracticable to provide, in connection with the toothed wheel 38, means suchv as is usually provided in connection with a line-space wheel vfor completing the movement initiated bythe line-space-p'awl. For this reason the wheel 38 has been provided with relatively ine teeth, the teeth of the block 39 being of the same character. There being practically no lost 'y movement between .the ratchet block 39 and the ratchet wheel 38, said block is adapted to begin turning the wheel immediately upon the beginning of a forward stroke of the arm 18. Iain thereby enabled to obtain sulic'ient `rotative movement of the wheel 38 to turn theplaten-section B a full line space withoutemploying means such as is used in connection with the ratchet chine.

The ledger section B and the statement section C need to be relatively rotatable after theledger sheet and thestatement have been fed into the machine, as thelines to be writ` ten upon'will'ordinarily` be at dierentfdistances from 'the upper edges of the .respective sheets. The construction herein shown permits of such relative rotation by means. ofthe fin er vvheels't'and'l.` ,Afterv the lines-j tubular shafts for ,on said .s eets have been alined the platensections B and C may be simultaneously linespaced by means ofthe ratchets 24 and 38, vor they may be connected, Aif desired, by means of the clamping means 35, so as to be simultaneously finger Wheel V13.

he clamping means 35 finds its greatest usefulness when it is desired to rintupon a sheet of such width that both o the platensections B and C must be use-d.

As Will be understood, the tally tape remains in the machine while entries are being made upon a succession of pairs of ledger sheets and statements, and is regularly linespaceg. by means of the pawl and ratchet 16-1 I claim as my invention:

1. A platen comprising` three alined sections, each end section having an outwardly extending tubular shaft, nger wheels secured Vto said shafts, a sli-aft to which the middle section is rigidly secured, one end of said shaft being rotatably mounted in one of said tubular shafts and having aefinger wheel at its outer end, the opposite end of the shaft of said middle section being rotatably supported in the adjacent end section, releasable means for connecting the lastmentioned end of the shaft of the middle section to said adjacent end section, ratchet mechanism connected to each of said tubular shafts for imparting` line-spaced movement to the respective end sections, and ratchet mechanism connected to the first-mentioned end of the shaft of the middle section for imparting line-space movement to the middle section.

2. A platen comprisingr three alined sections, each end section having and outwardly extending tubular shaft, finger wheels secured to said shafts, a shaft to which the middle section is rigidlv secured, one end of'said Shaft being rotatably mounted in one of said tubular shafts and having a finger wheel at its outer end,` the opposite end of the shaftV of said middle section being rotatably supported in the adjacent end section, ratchet mechanism connected to each of said tubular shafts for imparting line-space movement to the respective end sections, ratchet mecha.- nism connected to the first-mentioned end of the shaft of the middle section for imparting u line-space movement to the middle section and means connecting all of said ratchet mechanism for simultaneous actuation.-

3. A platen comprising three alined sections, each end section having an outwardly extending tubular shaft, a shaft to which the middle section is rigidly secured, one end of said shaft being rotatably mounted in one of said tubular shafts and having a finger wheel at its outer end, the opposite end of rotatable by means of ther the shaft of said middle section being rotat- `ably supported inv theadjacent end section platen comprising two alined sections,

one of the sections having a tubular shaft and an internal bearing member and the other section having a shaft which is rotatably supported in .said bearing member, and releasable means for rigidly connecting the end of the second shaft to said bearing member to lock saidjsections together, said means including ak screw' having a stem extending through the tubular shaft,.said screw being adapted toengage a y threaded portion of the second shaft, and a shoe loosely mounted Within arecess in the second shaft, said stem having a tapered portion arranged to press sai-.d shoe radially outward against the bearing member'when the screw is engaged with said lthreaded portion.

5. The combinationv of a platen comprising two alined sections, one Lof the sections having a tubular shaft and aninternal bearing member and the other section havingV a shaft which is rotatably supported in said bearingmember, and releasable means for rigidly connecting the end of the second shaft to said bearing member to locksaid sections together, said means including a screw having a stem extending through the tubular shaft, vsaid screw being adapted to engage a threaded portion of the second shaft, and a locking member within the bearing member, said stem being arranged to press said locking member against the bearing member when the screw is engaged with said threaded portion.

6. The combination of a platen comprising three alined sections, one of the end sections having a tubular shaft and an internal bearing member and the middle section having a shaft which is rotatably supported in said bearing member, and releasable means for rigidly connecting the end of the second shaft to said bea-ring member to lock said end section and the middle section together, said means including a screw having a stem extending through the tubular shaft, said screw being adapted to engage a threaded portion of the second shaft, and a locking member Within the bearing member, said stem having a portion arranged to press said locking member against the bearing member when the screw is engaged with said threaded portion. f

7. The combination of two alined platensections, means for rotatablysupporting said sections, said means includinga tubular'shaft V`secured toone section and a shaftsecured tothe other section and lying within the'tubularshaft, a line-space ratchet wheel secured'to the tubular shaft, valine-space ratchet wheelsecuredto the other shaft', ltwo pawls, on'e l forA .eachV of said ratchet wheels,*"'and means for simultaneously "actuating said dependent pivotal movement. y

85,The combination of twojalined platenpawls, said pawls being sup'portedl'orfinsections; means for :rotatably -supportin'gsai'd sections', said meansincludnga tubular shaftr securedltogone section and a shaft-'secured to the other section and lying"withi the tubular ush'aft,Y :ai {line-space f ratchet-lwheel isecured V-to v`the tubular-'1 shaft,` a 'line-space ratchetwheel secured tothe other shaft, two

"-PaWlS-f -V f y 9. The combination of two alinediplaten f j l ,sections, means for rotatably supporting said 80 paw-ls; one foreach of said' ratchet wheels, -thevsecondfmentioned line-space wheel: havingrela'tively fine teeth,an'd;tl`xel lcorresponding pawl having.' a .seriesf of relatively iine teeth', adapted' and-arranged 'to engage the secondmientioned wheelk withy approximately no los't mOtiOm-and'means for actuating said fneous actuation.

tions,van iijectin'g and ejectingr pinion xed to" the :mid 1e section, andmeans to connect the last-mentioned end-section to the middle section 'tofc'a'use said sections to rotate as a unit independently of the second end section.

13. A paper -carriagefor bookkeeping machines having a- Vstatement'platen-section, a

ledger-sheet vplatex'ilsecton and a` tally plate.

en-section, saidplaten-sections being axially -'aline'da'nd normally rotatable independently 'fof eachother, and three 'line-space ratchet `mechanisms each' for rotating one of said riage andconnecting two of said mechanisms `for simultaneous actuation, and a dr1v1ng connection 'between the third line-space "mechanism and one of the others.

' In testimony whereof; I have hereunto yaffixed my signature'. I

` OSCAR J. SUNDSTRAND.: s

l`sections, said means including a tubular shaft 7 ysecured.. to onesection and a shaft secured to `the other section and lying within th'etubuwheel-secured to' the l other shaft,` a vlinger `lar' shaft,.a line-space vratchetwheel secured to. the tubular'shaft, aY line-space ratchet lwheel secured to thetubular shaft at a point i between the line-space "Wheels, two'pawls, one for each-of said'l ratchet wheels,v and a single means- .for simultaneously: actuating both pawls. i'

- 10.l -The combination of aplaten' compris# ing a series of threealined sections, allheld against endwise movement relatively Ito each *i other,means operable from one end of the series for releasably locking the-middle sec- 'f I i' tion to onefoftheend -sections'fand means operable from the other end of the series for y independentlyA rotating the middle section andthe other end section;

11'. A paper carriage for bookkeeping machines or. typewriters. having three -alined platen-sections held against endwisemove-v ment relative to'one another-,an injecting and ejecting pinion and aline-'space gearxed to one of the end sections andlocate'dat 'one end ofthe series' of platen-sections, andan injecting and ejecting pinion and aline-Space' gear fixed. to the Vmiddle section and located tions. a.' s Y 12. A paper carriage for bookkeeping machines or typewriters-having three 'alined" platen-sections held against endwise move' at the other end of the series of platen-sec;A 't' ment relative to one another', an injecting and Y? ejecting pinion fixed to one of the end sec- 

